This article is about the Cisco Systems router/switch operating system. For the submarine cable system, see CIOS (cable system). For the mobile OS from Apple Inc., using the licensed trademark of Cisco Systems, see Apple iOS. For the Nintendo Wii operating system, see IOS (Wii Firmware).
This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations.(February 2015) (Learn how and when to remove this message)
Cisco IOS
Developer
Cisco Systems
Working state
Current
Source model
Closed source
Latest release
15.9(3)M[1] / August 15, 2019; 4 years ago (2019-08-15)
Available in
English
Platforms
Cisco routers and Cisco switches
Default user interface
Command-line interface
Succeeded by
Cisco IOS XE
Official website
Cisco IOS
The Internetworking Operating System[2] (IOS) is a family of proprietary network operating systems used on several router and network switch models manufactured by Cisco Systems. The system is a package of routing, switching, internetworking, and telecommunications functions integrated into a multitasking operating system. Although the IOS code base includes a cooperative multitasking kernel, most IOS features have been ported to other kernels, such as Linux and QNX, for use in Cisco products.
Not all Cisco networking products run IOS. Exceptions include some Cisco Catalyst switches, which run IOS XE, and Cisco ASR routers, which run either IOS XE or IOS XR; both are Linux-based operating systems. For data center environments, Cisco Nexus switches (Ethernet) and Cisco MDS switches (Fibre Channel) both run Cisco NX-OS, also a Linux-based operating system.
^"Networking Software (IOS & NX-OS)". Archived from the original on October 26, 2022. Retrieved November 1, 2022.
^"Cisco Internetworking Operating Systems (IOS)". Cisco. Archived from the original on 25 October 2022. Retrieved 25 October 2022.
Operating System (IOS) is a family of proprietary network operating systems used on several router and network switch models manufactured by Cisco Systems. The...
IOS XE is a release train of Cisco Systems' widely deployed Internetworking Operating System (IOS), introduced with the ASR 1000 series. It is built on...
IOS XR is a release train of Cisco Systems' widely deployed Internetwork Operating System (IOS), used on their high-end Network Convergence System (NCS)...
separately from Cisco's router technology. The Catalyst switches originally ran software called CatOS rather than the more widely known CiscoIOS software used...
compatibility with the IGRP routing protocols. Example of setting up EIGRP on a CiscoIOS router for a private network. The 0.0.15.255 wildcard in this example...
indicates which parts of an IP address are available for examination. In the CiscoIOS, they are used in several places, for example: To indicate the size of...
first cisco (later Cisco) product. Developed at Stanford University from 1982 to 1984 by Len Bosack and George Schnurle for PDP-10 computers. IOSIOS XE...
scaling, fault tolerance, and service-assurance (failsafe) mechanisms. CiscoIOS Release 12.1 and later releases allow the use of either Version 1 (WCCPv1)...
Windows version of ntttcp. Native Windows version developed by PCAUSA. CiscoIOS routers include ttcp as a hidden command that can be set up as either...
content covers proprietary technology such as CiscoIOS and its associated command-line interface commands. Cisco and its learning partners offer a variety...
bootflash for the CiscoIOS software. The latest generation supervisor is 'Supervisor 2T'. This supervisor was introduced at Cisco Live Las Vegas in July...
the device was read only. The 2500 series ran CiscoIOS (Internetworking Operating System). The initial IOS release for this model was 11.0, and the final...
mode over HTTPS. Because Cisco acquired the PIX from Network Translation, the CLI originally did not align with the CiscoIOS syntax. Starting with version...
number of features found within the actual hardware running a current CiscoIOS version. Thus, Packet Tracer is unsuitable for modelling production networks...
2016, Windows Server 2019, Windows Mobile, Linux, and in CiscoIOS (since IOS 12.2(14)S and IOS XE Release 2.1). Due to a patent claim, early in-kernel...
attacks.: 52 In 2001, Cisco released information that indicated that, even in read-only mode, the SNMP implementation of CiscoIOS is vulnerable to certain...
Cisco packet switching technology for Cisco routers, implemented in IOS 11.x around 1996. It was originally a software implementation for the Cisco 7000...
features compared to the well-known CiscoIOS. This platform is optimized for high-density 10 Gigabit Ethernet. Cisco Nexus OS Software Defined Networking...
marketed by Cisco Systems as CiscoIOS for S/390. It is currently offered by Computer Associates as Unicenter TCPaccess Communications Server. CiscoIOS for S/390...
Routing: OSPF Configuration Guide, CiscoIOS Release 15SY - OSPF Sham-Link Support for MPLS VPN [CiscoIOS 15.1SY]". Cisco. Archived from the original on...
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